900 resultados para Developing competencies at the Geography


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Preterm birth is a major problem in public health in developed and developing countries and the search for risk factors of this event is important. The aim of this study was to review the effect of periodontal treatment on the incidence of preterm delivery. A wide research was executed considering an evaluation period between November of 1998 and October of 2009 at MEDLINE/PUBMED databases. The selection strategy consisted of the search for the following key-words: periodontal therapy or periodontal disease and pregnancy outcome or preterm birth. The search was limited for articles written in English. The randomized clinical trials that evaluated the effect of the non-surgical periodontal treatment on the incidence of Preterm Low Birth Weight (PLBW) were selected. In a total of 7 papers selected, the incidence of PLBW was lower in groups of women who were submitted to periodontal treatment. Reductions of Preterm Birth (PTB) ranged from 0.8% to 28.01%, while reduction of Low Birth Weight (LBW) ranged from 0.44% to 33%. In studies that analyzed these two variables together, there was variation between 4.57% to 71.5% in rates reduction. Due to heterogeneity of the data, the meta-analysis was not applied. The majority of the studies concluded that non-surgical periodontal treatment in pregnant women reduces incidence of preterm babies with low weight.

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Background: Odontogenic tumors are lesions that are derived from remnants of the components of the developing tooth germ. The calcifying cystic odontogenic tumor or calcifying odontogenic cyst is a benign cystic neoplasm of odontogenic origin that is characterized by an ameloblastoma-like epithelium and ghost cells. Calcifying cystic odontogenic tumor may be centrally or peripherally located, and its ghost cells may exhibit calcification, as first described by Gorlin in 1962. Most peripheral calcifying cystic odontogenic tumors are located in the anterior gingiva of the mandible or maxilla. Case presentation. Authors report a rare case of a peripheral calcifying cystic odontogenic tumor of the maxillary gingiva. A 39-year-old male patient presented with a fibrous mass on the attached buccal gingiva of the upper left cuspid teeth. It was 0.7-cm-diameter, painless and it was clinically diagnosed as a peripheral ossifying fibroma. After an excisional biopsy, the diagnosis was peripheric calcifying cystic odontogenic tumor. The patient was monitored for five years following the excision, and no recurrence was detected. Conclusions: All biopsy material must be sent for histological examination. If the histological examination of gingival lesions with innocuous appearance is not performed, the frequency of peripheral calcifying cystic odontogenic tumor and other peripheral odontogenic tumors may be underestimated. © 2012 Lima et al.; licensee BioMed Central Ltd.

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